A fault tolerant inverter or controlled rectifier system includes a first leg having at least one switch device, a spare leg having at least one spare switch device, a spare leg connect switch associated with the spare leg and the first leg, a fault detection sub-system for detecting a fault in the first leg and outputting a signal on detection of a fault in the first leg, and a leg selection control sub-system that receives the signal output by the fault detection sub-system and controls the operation of the spare leg connect switch in accordance with the output signal, such that on detection of a fault the spare leg may be activated to take over the operation of the first leg.
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September 21, 2016
July 16, 2019
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